OBD Guide
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P1315

Igniter Circuit Malfunction No. 4

P1315 is an OBD-II diagnostic trouble code meaning: Igniter Circuit Malfunction No. 4. Common causes: malfunction of the 4th cylinder igniter, damage to the wiring to the igniter. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Misfire in cylinder 4
  • Loss of engine power
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Malfunction of the 4th cylinder igniter
  • Damage to the wiring to the igniter
  • Poor contact in the igniter connector
  • Malfunction of the ignition control module
  • Ignition circuit power problems

How to Fix

  1. Check the condition of the igniter of the 4th cylinder
  2. Check the integrity of the wiring and connectors
  3. Measure the resistance of the igniter
  4. Check signals from the control module
  5. Replace igniter if necessary

Related codes

P1300P1316P1320

Error P1315 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCJaguarLexusOldsmobileSaturn

FAQ

What does the P1315 code mean?

P1315 is an OBD-II diagnostic trouble code that indicates: Igniter Circuit Malfunction No. 4

What causes a P1315 error code?

The most common causes of P1315 include: Malfunction of the 4th cylinder igniter; Damage to the wiring to the igniter; Poor contact in the igniter connector; Malfunction of the ignition control module.

How do I fix a P1315 diagnostic trouble code?

To fix P1315: Check the condition of the igniter of the 4th cylinder. Check the integrity of the wiring and connectors. Measure the resistance of the igniter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1315?

Do not drive — repair immediately

How much does it cost to fix P1315?

The estimated repair cost for P1315 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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